Turkish President Recep Tayyip Erdogan has said he will ask parliament to ratify Finland's NATO membership, while putting Sweden's bid on hold for the time being.
Erdogan made the announcement in Ankara on Friday, accompanied by Finnish President Sauli Niinisto.
The Turkish president said Finland has taken "concrete steps" to address his calls to crack down on Kurdish separatist militants, who Ankara regards as "terrorists."
Erdogan has suggested that Sweden has not done enough, and that he will continue watching what actions it takes.
Finland and Sweden both applied for NATO membership in May last year, following Russia's invasion of Ukraine. Finland shares a border with Russia.
Accession to the trans-Atlantic alliance requires approval by all 30 member states.
Finland now appears assured of gaining membership. The only other hold-out, Hungary, has said its parliament will vote on ratification on March 27.